• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An actuator is configured to adjust the direction of radiation of light emitted from a light source (11) of a lamp unit (9) into a lamp housing (4) including a lamp housing (2) having an opening at least on one side and a cover (3) which blocks the opening. The actuating device comprises a housing body (31) having an interior space serving as an installation space (36); a drive motor (56) disposed in the installation space (46); and a driven body (48) having a driving force transmitting portion (52a) to which the driving force generated by the driving motor (56) is transmitted, and an output shaft (50) which is coupled to the lamp unit (9) and outputting the driving force transmitted to the driving force transmission portion (52a) to the lamp unit (9). The driven body (48) is supported by the housing body (31) so as to be movable in the front-rear direction of the lamp unit (9). The driving force transmission portion (52a) and the output shaft (50) are integral with each other.
    公开号:FR3017190A1
    申请号:FR1550739
    申请日:2015-01-30
    公开日:2015-08-07
    发明作者:Keiichi Tajima
    申请人:Koito Manufacturing Co Ltd；
    IPC主号:
    专利说明:

    [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuator configured to adjust the optical axis of a lamp unit when the output shaft of the actuator is moved into the forward-backward direction by the driving force generated by a drive motor. 2. Description of the Related Art In some vehicle headlights, a lamp unit including a light source and a reflector which reflects the light emitted by the light source are disposed in a lamp housing formed with a cover and a light source. a lamp housing. In some vehicle headlights, a lamp unit is pivotally (tilting) supported by a support member such as a console. The lamp unit pivots by means of the driving force generated by an actuating device to adjust the radiation direction of the light emitted by a light source of the lamp unit (see for example the publication of Japanese Patent Application No. 2013-247797 (JP 2013-247797 A)). In the vehicle headlamp described in JP 2013-247797 A, the lamp unit pivots in a vertical plane by means of the actuating device, so that a so-called attitude setting (attitude setting operation) is performed to correct the deviation of the optical axis which varies according to the weight of the loads transported by a vehicle. On the other hand, the lamp unit pivots in a horizontal plane by means of the actuating device, so that a so-called pivoting adjustment (pivoting operation) is performed to modify the direction of the optical axis in response to a variation of the direction of travel of the vehicle.
    [0002] The vehicle headlamps described above configured to adjust the direction of radiation of the light emitted by the light source include the following two types of vehicle headlights: i) vehicle headlights having the function of executing the operation pivoting but not having the function of executing the attitude setting operation; and ii) vehicle headlights having the function of performing the attitude setting operation but not having the function of executing the pivoting operation. A vehicle headlamp actuator having the function of executing the pivoting operation has components for the pivoting operation but does not have components for the attitude setting operation. On the other hand, a vehicle headlamp actuator having the function of executing the sole attitude setting operation comprises components for the attitude control operation but does not have components. for the pivoting operation. For example, a vehicle headlamp actuator having the function of performing the sole attitude setting operation comprises a driving motor, serving as a driving source, and various elements which are actuated by the driving force generated by the drive motor for rotating a lamp unit in the vertical direction. There are therefore requests to simplify the configurations of these elements. SUMMARY OF THE INVENTION The invention provides an actuating device including a smaller number of components, thus having a simplified configuration. One aspect of the invention relates to an actuator configured to adjust the direction of radiation of light emitted from a light source of a lamp unit disposed in a lamp housing including a lamp housing having an opening at less on one side and a cover that blocks the opening of the lamp housing. The actuating device comprises: a housing body having an interior space serving as an installation space; a drive motor disposed in the installation space; and a driven body having a driving force transmitting portion to which is transmitted the driving force generated by the driving motor, and an output shaft which is configured to be coupled to the lamp unit and which is configured to output the driving force transmitted to the driving force transmitting portion to the lamp unit. The driven body is supported by the housing body so as to be movable in the front-rear direction of the lamp unit. The driving force transmission portion and the output shaft are integral with each other. In the above aspect, the driving force transmitting portion and the output shaft are each formed as part of the driven body. In the actuator according to the above aspect, the housing body may comprise a guide portion which guides the driven body in the fore-aft direction, the guide portion being integral with the housing body. Thus, the driven body is moved in the fore-aft direction under the conduct of the guiding portion formed to form an integral part of the housing body. The appearance actuator may further include: a circuit board including a substrate rotated in the vertical direction of the lamp unit and an electronic component installed on the substrate; and a worm disposed in the installation space. The driving force transmitting portion may be a gear. The worm can be rotated by the driving force generated by the drive motor and can be engaged with the gear. The electronic component can be arranged laterally with respect to the drive motor and the worm in the lateral direction of the lamp unit. Thus, the region in which the electronic component is installed and the region in which the drive motor and the worm are installed are individually formed so as to be arranged side by side in the lateral direction. . The actuator configured as described above may further include: a transmission gear engaged with the worm to transmit to the worm the driving force generated by the drive motor; and a connector which is disposed on the substrate, and to which electricity is supplied from outside. The transmission gear, the drive motor and the connector can be aligned in the lateral direction. Thus, the transmission gear, the drive motor, and the connector are not aligned in the front-to-back direction. In the actuator according to the above aspect, the output shaft is rotatable as the driven body moves in the fore-aft direction; and a peripheral face of the output shaft may have a spherical shape. Thus, the output shaft has no part projecting in the lateral direction. In the above aspect, the driving force transmitting portion and the output shaft are each formed as part of the driven body. This configuration contributes to the reduction of the number of components of the actuating device, leading to a simplification of the configuration of the actuating device. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be well understood and its advantages will be better understood on reading the following detailed description. The description refers to the following drawings, which are given by way of example. Fig. 1 is a vertical sectional view of a vehicle headlight, illustrating an embodiment of the invention in cooperation with Fig. 2 to Fig. 9; Figure 2 is an exploded perspective view illustrating the interior configuration of the vehicle headlight; Figure 3 is an exploded perspective view of a device for operating the vehicle headlight; Figure 4 is a perspective view of the actuating device with a cover case removed; Figure 5 is an enlarged perspective view of a driven body; Fig. 6 illustrates a pitch control operation in cooperation with Fig. 7, Fig. 6 being a schematic plan view illustrating the state of the actuating device prior to the attitude setting operation; Fig. 7 is a schematic plan view illustrating the state of the actuator after the attitude adjustment operation; Fig. 8 is an enlarged plan view illustrating the state where a stopped portion of the driven body is brought into contact with a forward stop disposed in an installation housing, so as to limit movement of the driven body; and Fig. 9 is an enlarged plan view illustrating the state or the stopped portion of the driven body is brought into contact with a back stop disposed in the installation housing, so as to limit the movement of the driven body. DETAILED DESCRIPTION OF THE EMBODIMENTS An actuating device according to an embodiment of the invention will be described hereinafter with reference to the accompanying drawings. A vehicle headlamp 1 provided with an actuating device will first be described with reference to FIG. 1 and FIG. 2. The headlights for vehicle 1 are respectively fitted on the right and left end portions of the vehicle. front end of a vehicle body. Each vehicle headlight 1 has a lamp housing 2 having an opening at its front end and a cover 3 which blocks the opening of the lamp housing 2. The lamp housing 2 and the cover 3 constitute a lamp housing 4. The The interior of the lamp housing 4 is used as a lamp chamber 4a. An adjustment aperture 2a is formed at the rear end portion of the lamp housing 2. The adjustment aperture 2a extends through the rear end portion in the front-to-back direction.
    [0003] A console 5 is disposed in the lamp chamber 4a. The bracket 5 is supported by a sighting mechanism (not shown) so as to be tiltable (pivotable) relative to the lamp housing 2 in the lateral direction and in the vertical direction. The console 5 has an adjustment portion 6, posts 7 and a suspension portion 8. The adjustment portion 6 extends in the lateral direction. The posts 7 project upwards respectively from the right and left end portions of the adjustment portion 6. The suspension portion 8 extends in the lateral direction to interconnect the upper end portions of the posts. 7. A receiving and supporting portion 8a is formed in the center of the suspension portion 8 in the lateral direction. The receiving and supporting portion 8a is arcuate in shape, and its upper face is generally spherical in shape. The suspension portion 8 has an insertion cavity 8b which is located inside the receiving and supporting portion 8a, which is open forwards, and which extends through the suspension portion 8 into the the vertical direction. The adjusting portion 6 has coupling projections 6a projecting downwardly and separated from each other in the lateral direction. A lamp unit 9 is disposed in the lamp chamber 4a. The lamp unit 9 is supported by the console 5 so as to be pivotable (tilting) in the vertical direction. The lamp unit 9 comprises a reflector 10, a light source 11, a lens holder 12 and a projection lens 14. The reflector 10 reflects the light. The light source 11 is fitted to the rear end portion of the reflector 10. The lens holder 12 is disposed in front of the reflector 10. The projection lens 14 is fitted to the front end portion of the door lens 12 so as to be held by the lens holder 12. The reflector 10 has a bowl shape open towards the front. The inner face of the reflector 10 is in the form of a reflecting surface 10a. An adjustment hole 10b is formed in the rear end portion of the reflector 10. For example, a discharge lamp may be used as the light source 11. The light source 11 has a base 11a and a light emitter 11b. The base 11a is fitted into the adjustment hole 10b of the reflector 10. The light emitted by the light emitter 11b is reflected by the reflective surface 10a of the reflector 10 and is then radiated forwards through the lens of the reflector 10a. 14 and the cover 3. A fixed mask 13 is disposed between the reflector 10 and the projection lens 30. The fixed mask 13 has the function of blocking part of the light emitted by the light source 11. movable mask 15 is pivotally arranged in front of the fixed mask 13. The movable mask 15 has the function of blocking part of the light emitted by the light source 11. The movable mask 15 also has the function of modifying the amount of light to be locked according to the position of which pivots the moving mask 15, thus allowing for example a permutation between the low beam and high beam. A seal 16 is fitted to the lower end portion of the lamp unit 9. The seal 16 has a fixed plate 17 and a coupling projection 18. The fixed plate 17 is rotated in the vertical direction (ie that is, the upper face of the fixed plate 17 is turned upwards and its lower face is turned downwards). The coupling projection 18 projects downwards from the fixed plate 17. The coupling projection 18 has a coupling cavity 18a open downwards. The fixed plate 17 of the gasket 16 is attached to the lower end portion of the lamp unit 9, for example with screws. A supported projection 19 is disposed at the upper end portion of the lamp unit 9. The supported projection 19 includes a supported shaft portion 20 and rotation limiting ribs 21. The supported shaft portion 20 projects upwardly from the upper end portion of the lamp unit 9. The rotation limiting ribs 21 project upwardly from the upper face of the supported shaft portion 20.
    [0004] The upper end portion of the supported shaft portion 20 is formed by a generally hemispherical sliding portion 20a having a convex shape downwardly. The rotation limiting ribs 21 are flat elements facing towards each other and separated from one another in the lateral direction.
    [0005] The lower portion of the sliding portion 20a of the supported shaft portion 20 is inserted into the insertion cavity 8b formed in the suspension portion 8 of the bracket 5. Thus, the sliding portion 20a is slidably supported by below by the reception and support part 8a.
    [0006] The lamp unit 9 is suspended by the suspension part 8 by means of a retaining spring 22. The retaining spring 22 has a fixed sheet portion 23, a holding piece 24, upper sheet portions And the lower leaf portions 26. The attached leaf portion 23 has an elongate shape extending in the lateral direction. The fixed sheet portion 23 is rotated in the front-to-back direction (i.e., the front face of the attached sheet portion 23 is facing forward, and its back side is turned aft ). The holding piece 24 projects rearwardly from the upper edge of the fixed leaf portion 23. The upper leaf portion 25 projects rearward from the upper edge of the attached leaf portion 23. The The lower sheet 26 projects rearwardly from the lower edge of the fixed sheet portion 23. The holding piece 24 projects rearwardly from the center of the upper edge of the attached sheet portion 23 in the lateral direction. The upper sheet portions 25 are disposed respectively on the right side and the left side of the holding piece 24. The lower sheet portions 26 are located just below the corresponding upper sheet portions 25. Spaces are formed between the piece The gaps are used as the limiting slots 22a. When the sliding portion 20a of the supported shaft portion 20 is supported by the receiving and supporting portion 8a, the attached leaf portion 23 of the retaining spring 22 is pressed against the front face of the suspension portion 8 and the upper leaf portions 25 and lower leaf portions 26 hold over and under the central portion of the suspension portion 8 in the lateral direction. In this manner, the retaining spring 22 is fitted to the suspension portion 8. When the retaining spring 22 is fitted to the suspension portion 8, the sliding portion 20a is held over by the retaining piece 24 and thus, the sliding portion 20a is pressed against the receiving and supporting portion 8a over and the sliding portion 20a is slidable relative to the receiving and supporting portion 8a. As a result, the lamp unit 9 is allowed to pivot about the supported shaft portion 20 in the vertical direction relative to the bracket 5. At this time, the rotation limiting ribs 21 of the supported projection 19 are inserted into the limiting slots 22a of the retaining spring 22. Accordingly, the pivotal movement of the lamp unit 9 in the lateral direction about the supported shaft portion 20 is limited.
    [0007] A unit cover 27 is fitted to the front end portion of the lamp unit 9. The unit cover 27 hides the front side of the outer portion of the projection lens 14 from the lamp unit 9 A rear cover 28 which blocks the adjustment aperture 2a is fitted to the rear end portion of the lamp housing 2. A discharge lamp activation device 29 is fitted to the rear end portion of the base 11a of the light source 11. The discharge lamp activation device 29 is used to activate the light source 11. A lighting circuit and disposed within the gas lamp activation device 29 The discharge lamp activation device 29 is connected to a power supply circuit (not shown) by means of a cable 29a. An actuator 30 rotating the lamp unit 9 in the vertical direction to perform a pitch adjustment operation will then be described with reference to Fig. 1 to Fig. 5. The device the actuating device 30 is disposed below the lamp unit 9, as illustrated in FIG. 1. As illustrated in FIG. 3 and FIG. 4, the actuating device 30 comprises a casing body 31, a card of FIG. circuit 32 fitted to the housing body 31 and various elements (described later in detail) installed in the housing body 31. The housing body 31 is formed of an installation housing 33, a cover housing 34 and a housing The installation housing 33 is box-shaped and open upwardly. The cover box 34 closes the installation box 33 over it. The base case 35 is fitted to the installation case 33 from below. The interior space of the installation box 33 is defined as the installation space 36. A partition wall 37, which separates the installation space 36 into a front space and a rear space, is an integral part of the Installation casing 33. An upwardly open insertion cavity 37a is formed in the right end portion of partition wall 37. An adjustment groove 37b, which is open upward, is formed in the right end portion of the partition wall 37, in which the insertion cavity 37a is formed. The installation space 36 is separated into a front space and a rear space by the partition wall 37. The front space located in front of the partition wall 37 is defined as part of the installation space. functional element 36a, while the rear space behind the partition wall 37 is defined as a driving member installation portion 36b. The projected installation portions 38, 39 are disposed at the rear right end portion of the installation housing 33. The projected installation portions 38, 39 are separated from each other in the direction before behind. The projected installation portions 38, 39 each have a box shape which is open at least downward. The installation housing 33 has an installation opening 33a which is located between the projected installation parts 38, 39 and which extends through the installation housing 33 in the vertical direction. The outer peripheral face of the installation housing 33 has a plurality of engagement projections 33b which are separated from each other in the direction along the outer periphery of the installation housing 33. The upper end portion of the installation housing 33 is provided with fitted projections 33c. One of the 20 adjusted projections 33c projects to the right and the other adjusted projection 33c projects to the left. A shaft support portion 33d is disposed at the front right end portion of the installation housing 33. The shaft support portion 33d is perforated in the front-to-back direction. The inner face of the left-hand side of the installation housing 33 is provided with a rack 40 which extends in the front-to-back direction. The rack 40 is located in the functional element installation portion 36a. In the installation housing 33, a motor adjustment projection 41 is disposed in the center of the drive member installation portion 36b in the lateral direction. The motor adjustment projection 41 projects upwards. Guide portions 42 extending in the front-to-back direction are formed to form an integral part of the upper face of the bottom portion of the installation housing 33. The guide portions 42 are separated from each other in the lateral direction.
    [0008] A sliding projection 43 extending in the fore-and-aft direction is formed to form an integral part of the upper face of the bottom portion of the installation case 33. The sliding projection 43 is located at the portion of the right end of the bottom part. Stoppers 44, 45 are arranged in the installation housing 33. The stops 44, 45 are respectively directly connected to the front and rear end portions of the sliding projection 43. The height of the stops 44, 45 is greater than that of the sliding projection 43.
    [0009] A shallow installation cavity (not shown) open downward is formed in the underside of the bottom portion of the installation housing 33. The cover housing 34 has a shallow box shape open downwardly. The outer peripheral face of the cover housing 34 has a plurality of engagement members 34a projecting downwardly. Each engagement member 34a has an engagement hole. The cover housing 34 has fitted projections 34b. One of the adjusted projections projects to the right, while the other adjusted projection projects to the left. An insertion hole 34c, which extends through the cover housing 34 in the vertical direction, is formed in a position close to the front end of the cover housing 34. The insertion hole 34 has an elongated shape extending in the front-to-back direction.
    [0010] The base housing 35 has a flat closure portion 35a and an adjustment projection 35b. The flat closing portion 35a is in the form of a plate. The flat closing portion 35a is rotated in the vertical direction (i.e., the upper face of the flat closure portion 35a is upwardly facing and its bottom face is facing downward). The adjustment projection 35b projects upwardly from a portion of the closure plate portion 35a, which is close to the outer periphery of the closure flat portion 35a. The circuit board 32 is disposed on and attached to a portion of the flat closure portion 35a of the base housing 35, the portion being located within the adjustment projection 35b. The circuit board 32 is installed in the installation cavity formed in the lower face of the bottom portion of the installation box 33. The circuit board 32 has a prescribed circuit pattern (not shown). The circuit board 32 has a substrate 32a. The circuit board 32 is rotated in the vertical direction (i.e., the upper face of the substrate 32a is turned upward, and its bottom face is turned downward). Electronic components 46 and a connector 47 are installed on the substrate 32a. Some of the electronic components 46 are arranged in the forwardly projected installation part 38, the other electronic components 46 are arranged in the installation opening 33a and the connector 47 is arranged in the installation part projected towards the outside. 39. As described above, the installation box 33 includes the installation opening 33a in which are installed some of the electronic components 46. This configuration makes it possible to avoid contact between the installation box 33 and the electronic components 46, thereby making the actuator 30 thinner. A driven body 48 is disposed in the functional element installation portion 36a of the installation space 36 of the installation housing 33. The driven body 48 is supported by the installation housing 33 so as to be movable in the front-to-back direction. The driven body 48 is a one-piece member having a generally disk-shaped base disk 49, an output shaft 50, a first projection 51 and a second projection 52. The output shaft 50 projects upwardly. from the center of the base disk 49. The first projection 51 projects to the left from the base disk 49. The second projection 52 projects to the right from the base disk 49. The outer peripheral portion of the base disk 49 has guided cavities 49a which are separated from each other in the fore-and-aft direction, as illustrated in FIG. 5. The output shaft 50 has a peripheral face 50a having a generally spherical shape and an upper face 50b facing the as shown in Figure 3 to Figure 5. The left side portion of the first projection 51 includes a driven gear 51a which extends in the circumferential direction. entrained body 48.
    [0011] The right-hand side portion of the second projection 52 includes a gear 52a that extends in the circumferential direction of the driven body 48. The gear 52a may function as a driving force transmission pallet. The second projection 52 has a stopped portion 52b projecting to the right. The driven shaft 51a and the gear 52a are concentrically disposed around the center of the base disk 49. The guide portions 42 of the installation housing 33 are inserted into the guided cavities 49a of the driven body 48. Thus, the driven body 48 is supported by the installation housing 33 so as to be movable in the fore-aft direction under the conduit of the guide portion 42. When the driven body 48 is supported by the installation housing 33, driven shaft 51a is engaged with the rack 40 of the installation housing 33 and the stopped portion 52b is allowed to slide on the sliding portion 43. A worm 53 extending in the fore-aft direction is supported by rotation at the right end portion of the installation space 36 of the installation housing 33. The worm 53 includes a drive gear 53a and an actuating gear 53b which are secured trimmed from each other in the front-to-back direction. An insertion groove 53c extending in the circumferential direction of the worm 53 is disposed between the drive gear 53a and the drive gear 53b. A shaft adjustment hole 53d which is open forwards is formed in the front end portion of the worm 53.
    [0012] The worm 53 is rotatably supported by the installation housing 33 via a washer 54 and a supported shaft 55. The washer 54 is generally U-shaped. The washer 54 is inserted by above in the adjustment groove 37b of the partition wall 37 of the installation housing 33 and thus adjusted to the partition wall 37. The supported shaft 55 is pressure-fitted in the shaft support portion 33d of the installation housing 33. Thus, the worm 53 can rotate relative to the supported shaft 55. The washer 54 is inserted into the insertion groove 53c and thus adjusted to the worm 53. Supported shaft 55 is fitted into the shaft adjustment hole 53d. With this configuration, the worm 53 is rotatably supported by the installation housing 33. When the worm 301 7 1 90 14 53 is supported by the installation housing 33, the drive shaft 53a is in engagement with the gear 52a of the driven body 48. To prevent the worm 53 from moving upward away from the installation housing 33, the actuator 30 may have the following configuration. That is, instead of the washer 54, for example, a pressure portion that presses the worm 53 over can be disposed on the bottom surface of the cover housing 34. However, when the cover housing 34 is provided with the pressure portion, to avoid contact between the pressure part and the components installed in the installation space 36, such as a transmission gear 57, it is necessary to modify the position of the transmission gear 57. A change in the position of the transmission gear 57 can produce an increase in the dimensions of the actuating device 30.
    [0013] If the above-described configuration is used in which the washer 54 is used to allow the worm 53 to be rotatably supported by the installation housing 33, it is no longer necessary to provide the cover housing 34 of the pressure portion. This contributes to the reduction of the dimensions of the actuating device 30.
    [0014] A drive motor 56 is fitted to the motor adjustment projection 41 of the installation housing 33. The drive motor 56 has a main body 56a and a drive gear 56b attached to a motor shaft which projects upwards from the main body 56a.
    [0015] The transmission gear 57 is rotatably supported at the right-hand end portion of the drive member installation portion 36b of the installation housing 33. The transmission gear 57 has a transmission gear. crown 57a and a worm 57b disposed below the ring gear 57a. The transmission gear 57 is rotatably supported by the installation housing 33 via a support shaft 57c fitted to the worm 57b. The ring gear 57a of the transmission housing 57 is engaged with the drive gear 56b of the drive motor 56 and the worm 57b of the transmission gear 57 is engaged with the drive gear 57. 53b actuating the worm 53.
    [0016] With this configuration, when the drive motor 56 is rotated, the driving force generated by the drive motor 56 is transmitted to the drive gear 56b, the transmission gear 57 and the drive gear 56. worm 53, in that order. The driving force thus transmitted rotates the worm 53 and the rotation of the worm 53 displaces the gear 52a of the driven body 48 in a direction corresponding to the direction of rotation of the drive motor 56. As the gear 52a moves, the position in which the driven gear 51a of the driven body 48 is engaged with the rack 40 is changed and the driven body 48 is moved while rotating in the front-to-back direction under the control. At this time, the stopped portion 52b of the driven body 48 slides on the sliding projection 43. When the cover housing 34 is coupled to the installation housing 33, the output shaft 50 of the driven body 48 projects upwardly from the insertion hole 34c of the cover housing 34, as shown in FIG. 1 and FIG. 2. The actuating device 30 configured as described above is adjusted on the 5 by coupling the coupling projections 6a of the adjustment portion 6 of the bracket 5 to the fitted projections 34b of the cover housing 34 and then securing the coupling projections 6a and the fitted projections 34b together, for example with screw. When the actuator 30 is fitted to the bracket 5, the output shaft 50 is inserted into the coupling cavity 18a of the seal 16 of the lamp unit 9 and thus coupled to the lamp unit 9. When the output shaft 50 is coupled to the lamp unit 9, the lamp unit 9 pivots about the supported shaft portion 20 in the vertical direction relative to the output shaft 50 as a function of the movement of the output shaft 50 in the front-to-back direction.
    [0017] The attitude adjustment operation performed in the vehicle headlamp 1 will be described below with reference to Fig. 6 to Fig. 9. Fig. 6 to Fig. 9 illustrate the operation of the vehicle headlamp. 30 actuation, seen from above. Note that the lamp unit 9 and the cover case 34 are not shown in FIG. 6 until FIG. 9.
    [0018] The pitch control operation is an operation to rotate the lamp unit 9 in the vertical direction in a vertical plane to correct the deviation of the optical axis which varies according to the weight of the lamps. loads carried by the vehicle. In the attitude setting operation, the lamp unit 9 pivots in the vertical direction about the supported shaft portion 20. In the state which precedes the execution of the attitude adjustment operation the driven body 48 is located, for example, at the center of its range of travel in the fore-and-aft direction, as illustrated in FIG. 6. When the drive motor 56 is rotated by the electricity delivered by the circuit With the aid of the connector 47, the driving force generated by the drive motor 56 is transmitted to the worm 53. When the drive force generated by 56 is transmitted to the worm 53, the gear 52a is moved in a direction corresponding to the direction of rotation of the worm 53. When the gear 52a is moved, the position in which the driven gear 51a of the driven body 48 is in taken with the rack 40 is modified 20 and thus, the driven body 48 is moved in the fore-aft direction while rotating, as illustrated in FIG. 7. When the driven body 48 is moved in the fore-aft direction, the The lamp unit 9 pivots in the vertical direction depending on the movement of the driven body 48, i.e., the attitude adjustment operation is performed. During the attitude adjustment operation, the stopped part 52b of the driven body 48 slides on the sliding projection 43. In this case, if the driven body 48 is widely moved forward, the stopped part 52b is brought into contact with the front stop 44 to limit excessive movement of the driven body 48, as shown in FIG. 8. On the other hand, if the driven body 48 is largely moved rearward, the stopped portion 52b is brought into contact with the backstop 45 to limit excessive movement of the driven body 48, as shown in Fig. 9. It is thus possible to prevent excessive pivoting movement of the lamp unit 9 during the attitude adjustment operation. . The stops 44, 45 may be used as positioning parts which define the front and rear initial positions of the driven body 48. As described above, in the actuating device 30, the gear 52a , which functions as the driving force transmission part to which the driving force generated by the driving motor 56 is transmitted, and the output shaft 50 coupled to the unit of the order 9 are formed to form an integral part of each other. Thus, the gear 52a and the output shaft are each formed as parts of the driven body 48. This reduces the number of components of the actuating device 30, resulting in a simplification of the configuration of the device. In addition, the guiding portions 42, which guide the driven body 48 in the fore-aft direction, are formed to form an integral part of the casing body 31. Thus, the driven body 48 is moved into the forward-rearward direction under the guide portions 42 forming an integral part of the housing body 31. This further reduces the number of components of the actuator 30, thus facilitating a simplification of the configuration of the actuator 30.
    [0019] The actuator 30 further includes the circuit board 32 including the substrate 32a and the electronic components 46 installed on the substrate 32a. The substrate 32a is rotated in the vertical direction (i.e., the upper face of the substrate 32a is turned upward and its bottom face is turned downward). The electronic components 46 are arranged laterally with respect to the drive motor 56 (on the side thereof) and the worm 53 in the lateral direction. Thus, the region in which the electronic components 46 are installed and the region in which the drive motor 56 and worm 53 are installed are individually formed so as to be located next to one another in the lateral direction. This makes the actuator 30 thinner. In addition, the transmission gear 57, the drive motor 56 and the connector 47 are aligned in the lateral direction. Thus, the transmission gear 57, the drive motor 56 and the connector 47 are not aligned in the front-to-back direction.
    [0020] This configuration contributes to a decrease in the dimensions of the actuating device 30 in the front-rear direction. In addition, the peripheral face 50a of the output shaft 50 which rotates as the driven body 48 moves in the forward-to-back direction has a spherical shape. Thus, the output shaft 50 has no part projecting in the lateral direction. This configuration contributes to a reduction in the dimensions of the driven body 48. It is furthermore possible to prevent the lamp unit 9 from pivoting in a horizontal plane according to the rotation of the output shaft 50. It is therefore possible to possible to prevent a deviation of the radiation direction of the light emitted by the light source 11 in the lateral direction.
    权利要求:
    Claims (5)
    [0001]
    REVENDICATIONS1. An actuator configured to adjust the direction of radiation of light emitted from a light source (11) of a lamp unit (9) disposed in a lamp housing (4) including a lamp housing (2) having an opening at least on one side and a cover (3) which blocks the opening of the lamp housing (2), characterized in that it comprises: a housing body (31) having an interior space serving as a space installation (36); a drive motor (56) disposed in the installation space (36); and a driven body (48) having a driving force transmitting portion (52a) to which the driving force generated by the driving motor (56) is transmitted, and an output shaft (50) which is configured to be coupled to the lamp unit (9) and configured to output the driving force transmitted to the driving force transmitting portion (52a) to the lamp unit, the driven body (48) being supported by the housing body (31) so as to be movable in the front-rear direction of the lamp unit (9), the driving force transmission portion (52a) and the shaft outlet (50) integral with each other.
    [0002]
    An actuator according to claim 1, wherein the housing body (31) has a guide portion (42) which guides the driven body (48) in the fore-aft direction, the guide portion (42). forming part of the housing body (31).
    [0003]
    The actuator of claim 1 or 2, further comprising: a circuit board (32) including a substrate (32a) rotated in the vertical direction of the lamp unit (9) and an electronic component (46); ) installed on the substrate (32a); and an auger (53) disposed in the installation space (36), wherein the drive force transmission portion (52a) is a gear (52a), the worm (53) is driven rotated by the driving force generated by the drive motor (56) and engaged with the gear (52a), and the electronic component (46) is disposed laterally with respect to the drive motor (56) and the worm (53) in the lateral direction of the lamp unit (9).
    [0004]
    The actuator of claim 3, further comprising: a transmission gear (57) engaged with the worm gear (53) for transmitting the driving force generated by the drive motor (56) the auger (53); and a connector (47) which is disposed on the substrate (32a), and to which electricity is supplied from the outside, wherein the transmission gear (57), the drive motor (56), and the connector (47) is aligned in the lateral direction.
    [0005]
    An actuator as claimed in any one of claims 1 to 4, wherein: the output shaft (50) rotates as the driven body (48) moves in the fore-aft direction; and a peripheral face (50a) of the output shaft (50) has a spherical shape.
    类似技术:
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    同族专利:
    公开号 | 公开日
    JP6321389B2|2018-05-09|
    US20150217676A1|2015-08-06|
    JP2015145168A|2015-08-13|
    CN104819436B|2018-05-22|
    US9428102B2|2016-08-30|
    FR3017190B1|2021-05-14|
    DE102015201724A1|2015-08-06|
    CN104819436A|2015-08-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP3996038B2|2002-11-05|2007-10-24|株式会社小糸製作所|Vehicle headlamp device|
    JP4761562B2|2006-11-13|2011-08-31|株式会社小糸製作所|Vehicle lamp|
    JP4683658B2|2006-12-01|2011-05-18|株式会社小糸製作所|Vehicle lamp|
    US7445365B1|2007-07-24|2008-11-04|Lezi Enterprise Co., Ltd.|Position adjustment device for headlight of car|
    JP5779479B2|2011-11-11|2015-09-16|株式会社小糸製作所|Actuators and vehicle headlamps|
    JP5362073B2|2012-05-28|2013-12-11|株式会社東芝|Charger|
    JP6081115B2|2012-09-20|2017-02-15|株式会社小糸製作所|Actuators and vehicle headlamps|US9272661B2|2012-12-26|2016-03-01|Tricore Corporation|Vehicular lamp angle-adjusting mechanism|
    US9573514B2|2013-02-05|2017-02-21|Koito Manufacturing Co., Ltd.|Actuator and vehicle lighting device|
    US10962049B2|2015-12-25|2021-03-30|Koito Manufacturing Co., Ltd.|Fixing member, self-aligning bearing mechanism, actuator, and lamp|
    USD843488S1|2017-10-09|2019-03-19|Wist Work Llc|Spinning disc and spindle toy|
    FR3103879A1|2019-11-28|2021-06-04|Psa Automobiles Sa|Automotive headlamp with a movable mask indexed on an adjustment plate|
    法律状态:
    2015-12-08| PLFP| Fee payment|Year of fee payment: 2 |
    2016-12-15| PLFP| Fee payment|Year of fee payment: 3 |
    2017-12-11| PLFP| Fee payment|Year of fee payment: 4 |
    2018-08-17| PLSC| Search report ready|Effective date: 20180817 |
    2019-12-16| PLFP| Fee payment|Year of fee payment: 6 |
    2021-10-08| ST| Notification of lapse|Effective date: 20210905 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2014018654A|JP6321389B2|2014-02-03|2014-02-03|Actuator|
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